Quote:
Originally Posted by AV8R4AA
I have a 2004 air cooled alternator that has a slight whine.
It's not loud, just an intermittent whine.
Bought a mechanic stethoscope to isolate the noise.
It's the alternator for sure. Twice I have removed the serpentine belt
and spun every bearing pully. The last time I removed every pully and regreased them, they are not the noise. Even the alternator spins dead quiet.
Which is odd, because every alternator that had a marginal bearing, sounded
bad with a spin. Mine is solid and smooth with no noise by hand.
It's not a full time alternator whine, I think it's just one of the 2 bearings.
I hate to have to buy a 300+ new alternator for just one bearing.
Anyone have this issue?
Any new bearing kits to install?
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You say it's intermittent and I'm having the same problem. I've replaced all belts, tensioners and pulleys to no avail and have a weird whine/groan ONLY when the A/C is on. Without A/C, the sound goes away as the A/C compressor puts load on the system and the noise returns (only when the compressor kicks in). Are you having the same symptoms only with A/C on? If so, you may have helped pinpoint my problem, I thought it was the A/C compressor, but maybe it's the Alternator?
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